An interesting chemistry demonstration

I was gluing up two pressure treated boards the other day with TiteBond II. Since there was a slight curve to one of them, I clamped the whole thing onto the iron top of the table saw.

As some of you may know, the chemicals used in pressure treated wood are mostly copper salts.

When I unclamped the piece from the table saw, I was surprised to see that a small area of the iron table was now copper plated – right where the glue had oozed out between the pressure treated wood and the table top.

So something in the Titebond extracted metallic copper out of the salts in the wood.

Just thought this was an interesting tidbit.

-- Bob www.singularengineering.com - A sideline, not how I earn a living